I've lost my spun polyester pieces I used with hinging with paste and mulberry paper, to keep blotters from sticking. Where can I get some more? I've done a search of that name and come up empty, so may be using the wrong term.
The Hollytex is a bit steep but Reemay is similar and I have a ton of that for my garden. It's OK to use that between hinge and blotter?Try Talas and University Products. Perhaps Conservation Resources.
If you strike out, most plant nurseries have it, though it might not be as pure as what you have been using for hinging.